Zirconia ceramic slurry for micro-flow extrusion molding and its preparation method and application

A zirconia ceramic, extrusion molding technology, applied in ceramic molding machines, manufacturing tools, pharmaceutical formulations, etc., can solve the problems of liquid phase migration, insufficient strength of extruded filaments, etc. The effect of not taking into account the rheology and strengthening the strength

Active Publication Date: 2022-04-26
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In 2017, the published article "Preparation and Performance Research of Ceramic Denture Materials for Three-dimensional Printing" proposed a zirconia ceramic slurry: using dental grade ceramic oxide powder, silane coupling agent, propanol and deionized Zirconia ceramic slurry is made of water etc., and its solid content is 55wt% (low solid phase). Although the slurry provided by it meets the performance requirements of dentures and is relatively smooth during extrusion, However, it is prone to problems such as liquid phase migration and insufficient strength of extruded wire due to low solid content.

Method used

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  • Zirconia ceramic slurry for micro-flow extrusion molding and its preparation method and application

Examples

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preparation example Construction

[0048] A method for preparing zirconia ceramic slurry for microfluidic extrusion molding, wherein: The preparation method comprises the following steps:

[0049] According to the above ratio, ceramic powder, sodium polyacrylate dispersion agent and MRH-070 hyin epoxy resin toughening agent were weighed and mixed, adding a lubricant taken according to the proportion, adding pH adjuster to adjust the pH value to 8 ~ 9; the above mixed liquid was magnetically stirred for 30 ~ 40min, stirred and placed in the TJ series planetary ball mill tank, keeping the ball mill speed of 1000 ~ 1200r / min ball mill 8 ~ 12h, After standing for 2h, a zirconia ceramic paste for microflow extrusion was prepared.

[0050] An application of zirconia ceramic paste for microfluidic extrusion molding, characterized by: consisting of the following steps:

[0051] The above obtained zirconia ceramic paste for microfluidic extrusion molding is injected into the plunger barrel of the three-dimensional molding...

Embodiment 1

[0053] The zirconia ceramic paste used in the present embodiment for the microfluidic extrusion molding process, the composition of the ceramic powder used and the mass fraction of each component are shown in Table 1, the components of the zirconia ceramic slurry used and the mass fraction of each component are shown in Table 2.

[0054] Table 1 Composition of ceramic powder (mass fraction,%)

[0055] Ceramic powder alumina Titanium oxide zirconia Quality score 5％ 3％ 92％

[0056] Table 2 Composition of zirconia ceramic paste (mass fraction, %)

[0057] Zirconia ceramic paste Ceramic powder lubricant Sodium polyacrylate Hine epoxy resin Quality score 68wt％ 20wt％ 4.08wt％ 8.16wt％

[0058] Alumina and titanium oxide are nanoscale ceramic powders, sodium polyacrylate diluted in aqueous solution, formulated into an aqueous solution with a mass fraction of 50wt%, and its molecular mass is 3000~5000;

[0059] Zirconia is nano zirconia powder ...

Embodiment 2

[0098] The zirconia ceramic paste used in the microfluidic extrusion molding process, the composition of the ceramic powder used and the mass fraction of each component are shown in Table 5, the components of the zirconia ceramic slurry used and the mass fraction of each component are shown in Table 6.

[0099] Table 5 Composition of ceramic powder (mass fraction,%)

[0100] Ceramic powder alumina Titanium oxide zirconia Quality score 3％ 4％ 93％

[0101] Table 6 Composition of zirconia ceramic paste (mass fraction, %)

[0102] Zirconia ceramic paste Ceramic powder lubricant Sodium polyacrylate Hine epoxy resin Quality score 70wt％ 20wt％ 3.5wt％ 6.5wt％

[0103] Other steps are the same as in Example 1, the resulting product is the same as Example 1.

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Abstract

The invention relates to a zirconia ceramic slurry for micro-flow extrusion molding and a preparation method and application thereof. The composition of the zirconia ceramic slurry includes ceramic powder, lubricant, dispersant, toughening agent and pH regulator; the composition and mass percentage of the ceramic powder are: alumina 3%-6%; titanium oxide 2%- 5%; dental matrix material zirconia 90% ~ 95%; the volume ratio of the lubricant composition is deionized water: glycerol = 9:1; the dispersant is sodium polyacrylate, the mass is zirconia The mass ratio of the sum of the ceramic powder, dispersant and toughening agent to the lubricant is 3:7-17. The present invention improves the rheological properties of the slurry through the addition of sodium polyacrylate organic matter, taking into account both high solid phase and rheological properties; enhances its strength and toughness, so that the ceramic slurry can be extruded smoothly under the micro-flow extrusion molding process, No or negligibly low liquid phase migration occurs, and the extruded body is less prone to collapse.

Description

Technical field [0001] The present invention belongs to the field of additive manufacturing printing material technology, relates to a ceramic slurry for making zirconia ceramic slurry for microfluidic extrusion molding, in particular to a zirconia ceramic slurry for microfluidic extrusion molding and preparation method and application thereof. Background [0002] Ceramics are widely used in biomedical and other disciplines because of their high strength and toughness, biocompatibility and rapid development, bioceramic materials are known as "future materials" because of their excellent properties. In the field of biomedicine, ceramic materials have become the first choice for repair materials with their excellent biocompatibility, good wear resistance and corrosion resistance, and are often used to make human bones and ceramic dentures. [0003] The main components of ceramic materials used to make bioprosthetics can be divided into three categories, including silicate ceramics...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/626A61K6/818A61K6/802A61K6/816A61K6/887A61K6/891B28B1/00C04B35/632C04B35/634B33Y10/00B33Y70/10
CPCC04B35/48C04B35/62605B28B1/001C04B35/63404C04B35/63452C04B35/632B33Y10/00B33Y70/00C04B2235/3217C04B2235/3232C04B2235/6026
Inventor 周婧段国林孙文彬卢林李迪夏晓光张静
Owner TIANJIN UNIV OF SCI & TECH
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